JPH0566828A - Manual operating method for process controller - Google Patents

Abstract

PURPOSE:To execute an input of an ambiguous manipulated variable by designating the manipulated variable as a position on a display device, even in the case an operator does not determine exactly in advance the manipulated variable of a final control element. CONSTITUTION:In order to instruct a change of an operation target, a new operation target value 1223 is instructed with a finger 6 and inputted to a display part 1221 of an operation target value in an operating frame 122. By this input, a CRT operation computer updates a display of a bar graph of the target value 1223 to an instructed position, and also, converts this position to the corresponding manipulated variable, generates a control target value to a final control element concerned and transfers it to a controller through a network. The controller controls automatically the final control element of the process to this target value. Also, in the course of displaying the operating frame 122, it is also possible to execute a manual operation of the process final control element by using operating buttons 131, 132 set onto a keyboard in accordance with this operating frame.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manually operating a process control device for a plant, and more particularly to a method for manually inputting an operation target value.

[0002]

2. Description of the Related Art Conventionally, in plant control systems,
When the operator inputs an operation command to the CRT operation device, a keyboard or the like is used to clearly instruct the amount to be operated.

Further, Japanese Laid-Open Patent Publication No. 55-76406 discloses a method of using voice input for operation control of a plant, and Japanese Laid-Open Patent Publication No. 60-205722 discloses CRT display and touch for operating automatic equipment. A method using a screen is disclosed.

[0004]

By the way, although the plant control is essentially performed by automatic control, many manual operations are required because more advanced operation is required and the way of operation is changed. In addition, due to the progress in labor saving, the number of switches that have been manually operated in the field in the past is often installed in the central operation room, but in most cases the operation is automatically controlled. Absent.

In the manual operation, in order to input the operation amount clearly, it is necessary for the operator to clearly determine the operation amount before inputting. For that purpose, (1) the operator has to input the operation amount numerically, or (2) the operator has to continuously change the operation amount to a desired value.

However, it is rare that the operator can clearly instruct the operation amount of the operation end as in (1). Also,
It is realistic to operate the operating end continuously as in (2), but during operation, the operator must stick the operating end to this operation until the operating end completes the required operation. However, there is a problem that the load on the operator is large.

That is, when operating the operating end of the process, it is not always easy for the operator to immediately determine a definite amount of operation, and to perform a rough operation "about this", and then It is desirable to be able to make fine adjustments while looking at the state of other process quantities.

The present invention provides a method for manually operating a process control device, which allows an ambiguous operation amount of "generally, this amount" to be input even if the operator has not specified the operation amount of the operating end. It is in.

[0009]

A method for manually operating a process control device according to the present invention is a method for manually operating a process control device for controlling the operating end of a process, wherein A rough operation target value is given to the target operation end, control of the operation end is automatically executed toward the rough operation target value, and fine manual operation intervention is possible during the execution. is there.

According to another aspect, a method for manually operating a process control device according to the present invention is a method for manually operating a process control device for controlling an operating end of a process, which is provided on an operation display screen of an operator console. A plurality of operating ends are displayed as symbols on the display, and the operating end to be operated is specified by pointing the symbol on the operation display screen. At least the operating target value and the actual operating end of the specified operating ends of the specified symbols are specified. An operation frame including the operation amount is displayed on the display screen, a new operation target value for the operation target value in the operation frame is instructed on the screen, and the operation target value in the operation frame is updated according to the instruction. In addition, the operation end is automatically controlled toward the new operation target value, and the result of the automatic control is reflected on the actual operation amount in the operation frame and displayed. Those were Unishi.

[0011]

When the operator appropriately designates the position on the operation display screen, the computer determines the amount of operation corresponding to the designated position. Alternatively, when the operator inputs the direction of the operation amount into the voice input device, the computer determines the operation amount corresponding to this input. Thereby, the operator can instruct a rough (approximate) operation amount by a simple operation. In response to this instruction, the controller automatically operates while the operating end operates from the current input to the operation amount determined by the computer corresponding to the approximate operation amount. As a result, since the operator does not manually stick the operation end until the operation of the operation end is completed, the operator's operation load is reduced.

Further, if there is manual operation intervention by the operator's clear operation amount input during automatic control up to the operation amount input as the outline, the automatic control is canceled and the manual operation is prioritized. Further, it is possible to perform a more delicate operation, and it is possible for the operator to intervene in an emergency operation, so that the safety of the plant operation is not impaired.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a system configuration diagram of a control system to which the present invention is applied. Reference numeral 1 denotes an operator console for the operator to monitor and operate the plant, 11 denotes a touch panel as an input device attached to the operator console 1, and 12 denotes C as a display device.
The RT display device 13 is a keyboard as another input device. Further, 2 analyzes the input command from the keyboard 13 and the touch panel 11 on the operator console 1, presents information to the operator using the CRT 12, and creates the operation command of the plant process 5 to the control device 4. , A CRT operation calculator that outputs commands to the network 5 of the information transmission device.

Reference numeral 4 is connected to a CRT operation computer 2 via a network 3 and a plant process 5 is connected.
2 shows an automatic control device for inputting information from.

Reference numeral 5 denotes a plant process, which has process operating ends 51 and 53 and a process information detecting end (sensor) 52.

FIG. 2 shows a functional block diagram of the CRT operation computer 2.

The operator's input operation input from the touch panel 11 and the keyboard 13 is performed by the input analysis processing unit 2.
If the input operation is analyzed by 1, and the input operation is a screen display request, to the display data creation unit 28, if it is a process operation command or operation target value, to the operation command editing unit 23, if it is a control target value setting request, This is transmitted to the target value setting processing 22.

The target value setting processing unit 22 transmits one or several input set values to the display data creating unit 28 for displaying on the CRT and controls the plant toward the set values. A control target value for each process is created and transmitted to the operation command editing unit 23.

The operation command editing section 23 refers to the plant database 2A, judges the validity of the operation command, the operation target value, and the manual target value, and if the operation is dangerous to impair the safety of the plant, In order to notify the operator of the danger, it is transmitted to the display data creation unit 28, otherwise, the process operation command to each control device or the control target value is edited and transmitted to the transmission editing unit 24, and the transmission processing unit 25. An operation command is sent to the network 3 via the.

The computer 2 also receives the information from the control device 4 from the network 3 via the reception processing unit 26,
It is loaded into the plant database 2A via the reception editing unit 27.

The screen information of the CRT screen is stored in the storage unit 2B, and the display data creation unit 28 is connected to the input analysis unit 12.
When there is a display request from the CRT 12, the CRT 12 is caused to display a screen via the CRT display unit 29. The process state displayed on the CRT screen is periodically updated with reference to the contents of the plant database 2A.

FIG. 3 shows processing of the functions of the CRT operation computer 2 described with reference to FIG. 2, focusing on only input analysis of an operation command and creation of the operation command. Therefore,
The display data creation unit 28 and the like are not shown.

The input information input from the touch panel 11 is passed to the target value setting processing section 22 as input coordinate data via the input analysis section 21. Target value setting processing unit 22
The input position confirmation processing unit 221 in the above refers to the operation frame display coordinate table 2B11 in the screen database 2B1 of the screen currently displayed on the CRT in the storage unit 2B,
Now, the operation command value creation processing is performed to analyze which input coordinate data indicates which part of which bar graph of which operation frame on the screen points and which percentage of the bar graph showing which process amount. It is passed to the section 222.

The operation command value creation processing unit 222 refers to the engineering value range table 2B12 of the bar graph in the operation frame, creates an operation command value corresponding to the passed data, and transfers it to the operation command edit processing unit 23. ..

The operation command determination processing unit 231 in the operation command variation processing unit 23 confirms that the operation command value is appropriate, and refers to the plant database 2A.
Refer to the usage limit value data to see if the usage limit value of the equipment is not exceeded, or to reference the process data, and an impossible command (for example, output reduction command to inactive pump or device stop command that cannot be stopped for safety) It is determined that it is not) and is passed to the transmission edit processing unit 24 to the control device 4.

FIG. 4 shows the configuration of the equipment of the control device 4.

The control device 4 receives an operation command from the CRT operation computer 2 or the like via the network 3, inputs it to the reception editing part 42 via the reception processing part 41, and inputs the process status from other control devices 4A or 4N. If it is data, it is stored in the plant database 47, and if it is an operation command or control target value, it is transmitted to the arithmetic processing unit 43. The arithmetic processing unit 43 normally operates the process operating end 5 of the plant 5 via the process input / output processing unit 44 toward its own control target value.
1 and 53 are controlled and the state quantity of the process is fetched from the detection end 52, but when an operation command or a new control target value is accepted, this is prioritized and the process operation end 51, 5
Control 3

The process state fetched from the process detection end 52 is stored in the plant database 47, and periodically transmitted by the transmission editing unit 45 to the network 3 via the transmission processing unit 46.

The manual process operation of this system will be described below.

FIG. 5 is a CRT of the operator console 1.
12 shows an example of the operation screen 121 displayed on the screen 12. When the operator designates with the finger 6 the symbol 123 indicating the operation end to be operated on the operation screen 121, the touch panel 11 detects this and the operation end 123 is displayed on the operation screen 121 as shown in the lower part of the figure. Operation frame 12 corresponding to
Display 2. In the operation frame 122, in addition to the operation end name 1224, the current operation target value 1 for the selected operation end is set.
221, process 5 to control device 4, network 3
The actual operation amount 122 of the corresponding operation end input via
2 is displayed.

FIG. 6 shows an instruction for changing the operation target.
The operation target value display portion 1221 in the operation frame 122 is indicated with the finger 6 to instruct and input a new operation target value 1223. By this input, the CRT operation computer 2 updates the display of the bar graph of the operation target value 1223 to the instructed position, converts the instructed position into the corresponding operation amount, and controls to the corresponding operation end. A target value is created and transmitted to the control device 4 via the network 3. The control device 4 automatically controls the operating end of the process toward this control target value.

While the operation frame 122 is being displayed, the operation buttons 131 and 132 set on the keyboard 13 corresponding to the operation frame 122 can be used to manually operate the process operation end.

In FIG. 7, after the operation target value 1221 in the operation frame 122 becomes the display of the newly instructed operation target value, the control unit 4 automatically controls toward the control target value, and the actual operation is performed. The display state in which the amount 1222 is the same as the operation target value is shown.

FIG. 8 shows a plant control process of an operation command focusing only on the operation command among the above operations. In addition,
In this figure, a CRT operation computer 2 and a control device 4
The network 3 between and is not shown.

Normally, the operating end 51 is automatically controlled by the control device 4 toward a certain target value. That is, the automatic switch command 2315 causes an analog switch (ASW).
432 is switched to the automatic operation command 4322 side, and based on the control deviation 520 with respect to the target value, the PID control 431
The control output by is being performed.

However, when the CRT operation computer 2 outputs the operation command value 2310 in response to the manual operation of the operator shown in FIGS. 5 and 6, the CRT operation computer 2 outputs the operation command 4320 to the operation end.
Then, the deviation of the operation command value 2310 output by itself is monitored, and the signal of operation command value output 2311 is output until the deviation disappears. During this period, the analog switch (ASW) 2312 is operated by the AND gate 2316 and the operation command value 2
It has been switched to the 310 side. On the other hand, the OR gate 23
The analog switch 432 is switched from the automatic control signal output 4322 to the operation command value 2310 side by 14 and the operation command value 23 is transmitted via the analog memory (AM) 2313.
The manual operation command 4321 following 10
Is controlled. However, a rate limiter (RL) is provided between the analog memory 2313 and the analog switch 432 so that the operation output can be finally switched to the operation command value 2310 at a slow rate so that the output signal does not suddenly change at the time of this switching. ) 433 is provided, and the operation initial value is tied back to the output 4320 of the ASW 432.

The operation end 5 according to these operation command values 231
In addition to the command output to 1, the input button (increase 13
1, 1) 132), the operation is preferentially accepted. That is, the output from the input button causes NOT
AND gate 2 via gate 2317 or 2318
316 is turned off, the analog switch 2312 is switched to the operation command output 4320 side to the operation end, and the increase / decrease command is input to the I input terminal or the D input terminal of the analog memory 2313.

FIG. 9 shows an example in which the control device 4 does not directly output an operation command but allows the control device 4 to set the set value 4323 of the control target value for automatically controlling the operation end 51 from the CRT operation computer 2. Show.

Normally, the operating end 51 calculates a control target set value 4323 set in advance and a control deviation 434 based on the input of the sensor 52, and the PID control 431 performs automatic control.

When the CRT operation computer 2 is outputting the operation command value 2310, the control target set value 4
323 is updated to this operation command value, and thereafter held at that value.

Further, as shown in FIG. 8, the direct operation command 4321 to the operating end 51 is switched to the control output by the switching device (T) 432 so as to be output to the operating end 51. There is.

FIG. 10 shows a flow of the manual operation of the above operation end.

First, the operator selects an operation target on the CRT display screen (70). The CRT operation computer 2 displays the operation screen of the selected operation target on the CRT 12 (71). The operator designates the operation target value on the operation screen (72). After that, the CRT operation computer 2 transmits the operation target value to the control device 4 via the network 3, and the control device 4 automatically controls the operation end toward this operation target value (77). At this time, it is monitored whether or not the operation has been performed at the operation target value (75), and if the operation end moves up to the operation target value, the automatic control is ended (74).

During this automatic control, the keyboard 13
It is also possible to intervene the operation of the operator from the keyboard, and if there is an operation from the keyboard 13 (73), the automatic control to the operation target value is ended by this (74), and an operation command is issued to the operating end by a command from the keyboard 13. Is output (7
6).

FIG. 11 is a functional block diagram of a computer when a voice input device is applied as an input device for operator's operation input. The operator uses the touch panel 11 to specify the operation end or the setting instrument to be operated on the CRT screen, and inputs the direction of the operation from the voice input device 14 such as "a little more" or "more". As a result, the computer 2 determines the operator's intention to operate, creates an operation target value in the unit determined for one voice input, and transmits it to the target value setting processing unit 22.

Thereafter, the operator's input operation is enabled in the same manner as in the case of FIG.

[0048]

According to the present invention, even if the operator has not explicitly determined the operation amount of the operation end in advance, the operator can unambiguously specify the operation amount on the display device or by voice input. It is possible to input the manipulated variable. As a result, the computer can calculate and determine the operation amount to perform the operation.

Further, since the control device automatically performs the operation of the operation end, the operation up to the input operation amount is as if it were an automatic control, which eliminates the need for the operator to perform a continuous operation, which imposes a load on the operator. Will be reduced.

At this time, when the operator inputs a clear operation amount from an input device such as a keyboard, the operation amount operation is prioritized and the automatic operation can be canceled. Therefore, the operation amount ambiguously input by the operator After the automatic operation, fine adjustment can be performed by the operator's intention, and the operation can be stopped in the middle of the automatic operation, so that the accuracy of the operation can be improved and the safety can be secured.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a control system to which the present invention is applied.

FIG. 2 is a functional block diagram of a CRT operation computer according to an embodiment of the present invention.

FIG. 3 is a functional block diagram of a main part of a CRT operation computer.

FIG. 4 is a functional block diagram of the control device shown in FIG.

FIG. 5 is an explanatory diagram of an operating CRT screen according to the embodiment of the present invention.

FIG. 6 is an explanatory diagram of an operation CRT screen following FIG. 5.

FIG. 7 is an explanatory diagram of an operating CRT screen following FIG.

FIG. 8 is an explanatory diagram of a plant control process of an operation command focusing only on the operation command in the embodiment of the present invention.

FIG. 9 is an explanatory diagram of an example in which a set value of a control target value for automatically controlling the operating end can be set from a CRT operation computer in the embodiment of the present invention.

FIG. 10 is a flowchart showing an operation flow according to the embodiment of the present invention.

FIG. 11 is a functional block diagram of another embodiment of the present invention based on voice input.

[Explanation of symbols]

1 ... Operator console, 2 ... CRT operation computer, 3 ... Network, 4 ... Control device, 5 ... Process, 122 ... Operation frame, 123 ... Symbol, 122
1 ... Operation target value, 1222 ... Actual operation amount, 1223 ...
New operation target value, 1224 ... Operation end name.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Atsushi Takita 5-2-1 Omika-cho, Hitachi City, Ibaraki Hitachi Ltd. Omika Plant, Ltd. (72) Inventor Akira Sugano 5-chome, Omika-cho, Hitachi City, Ibaraki Prefecture No. 1 Incorporated company Hitachi Ltd. Omika factory (72) Inventor Kiichi Iwata 52-1 Omika-cho, Hitachi City, Ibaraki Prefecture Hitachi Ltd. Omika factory

Claims (5)

[Claims] 1. A method of manually operating a process control device for controlling the operating end of a process, which comprises providing the process control device with a rough operation target value for the operating end to be operated, Manual control method for a process control device, characterized in that the control of the operation end is automatically executed toward a desired operation target value, and fine manual operation intervention is enabled during the execution. 2. A method for manually operating a process control device for controlling the operating end of a process, wherein a plurality of operating ends are displayed as symbols on an operating display screen of an operator console, and the operating display screen is displayed. The operating end to be operated is specified by designating the symbol, and an operating frame including at least the operation target value and the actual operation amount of the operating end of the specified symbol is displayed on the display screen, and the operating frame is displayed. A new operation target value is indicated on the screen for the operation target value in the screen, the operation target value in the operation frame is updated according to the instruction, and the operation end is automatically directed toward the new operation target value. A method for manually operating a process control device, comprising controlling and displaying a result of the automatic control by reflecting the result on the actual operation amount in an operation frame. 3. The manual operation method for a process control device according to claim 2, wherein the operation end is specified and a new operation target value is instructed by a touch panel arranged on the display screen. 4. The manual operation method for a process control device according to claim 2, wherein the instruction of the new operation target value is given by a voice input device. 5. During automatic control to the new operation target value,
3. The method for manually operating a process control device according to claim 2, wherein the automatic control to the new operation target value is released when a key input for manually operating the process control device is made.